Envelope



Jan. 13, 19 31. MARTm 1,788,467

ENVELOPE Original Filed March 4, 1927 INVENTOR Patented Jan. 13,1931 I fiTATES ABCI-IWORTI-I MARTIN, or VIBELLEVUE, rENNsYLv NIa, Assienon T UN T STATES ENVELOPE COMPANY, on woaonsrna, MASSACHUSETTS, A oonroaa'rron or MAINE ENVELOPE Application filed March 4, 1927, Serial N0.172,6'90. Renewed re mary 15, 1930.

This invention relates to envelopes for mailing purposes, and more particularly to those which embody, in an integral ora unitary structure, two separate compartments,

the purpose being to provide a double or duplex envelope for the transmission of two different classes of postal matter, mailable' at different rates of postage.

My invention eontemplatesthe provision of an envelope having a main compartment for receiving catalogues, merchandise, automo bile license plates, etc., and a pocket for statements, invoices, letters, etc., which may be conveniently formed of a single sheet of material and so arranged that the compart-v ment and pocket are conveniently accessible for the insertion of the matter to be Shipped or transmitted. Another objectof my invention is to provide a two-compartment envelope ofsuch' form that 1t may be readily made on automatio machines, such as those now employed in making various types of envelopes.

Otherand further OlOJQCtS and advantages of the invention will be made apparent by the following detailed description thereof, taken in connection with the accompanying drawings, in which, Figure l is a plan view of the blank from which the envelope of my invention may be made, and Figure 2 is a plan view of the completed envelope made from the blank of Figure 1, the same being shown folded and sealed and ready for mailing.

The blank comprises a main body portion and a supplemental body or back portion a that is foldable on the broken line 5 to overlie the main body portion 3. Theblank further comprises a flap (3 here shown as extending from one edge of body portion and preferably providing a window opening 7 adapted to reveal the address on an inclosnre within the envelope pocket provided, as hereinafter described, by said flap 6; the latter, following the inward folding of back portion at on body portion 3, is folded inwardly on the broken line 5 to overlie the lower part of the back portion 4: and its gummed portions 8 caused to adhere thereto;in this way, a pocket isformed on the outside of back portion 14 between the zones o-l adhesion 8, Set the flap 6, the entrance to said pocket, for the insertiontherein of a' flap 6 between theadhesively secured end p'ortionsof said edge. The blank also. proletter or the like being along the edge of Vides a sealing flap 9 which projects from cated at 11, to hold. the body portion 4 in',po I

sition butI ,mav arefer to omit the umming at thisflpoint, Since the body portion 4 can beotherwise heldin-posi-tion, ashore maifterdescribed.

'umn' ed at, 12, so that.

The sealing flap 9 is when folded to the position shown Fig. 2, it will overlie; theinn'er edge. of" the pocket flap 6-and adhere-to suchflap and also to the body portion. a; thus the gumming 12 serves not only to hold the body portion t mediately, but the flap 9 will be. first folded over the back 4L- and sealed at 11. After insertion of the goods, the flap 10 would be then folded and either sealed, or left unsealed for postal inspection. 7 The gum-med portion 12 of the flap 9 will be brought against the pocket flap 6 and sealed, upon insertion of a letter or the like within the pocket, either be fore or after the insertion of merchandise in the large compartment.

From the foregoing it will be seen that I in position, but also servesto retain mail lee provide an envelope into which the goods can the main body portion and folded into posia portion of the supplemental be inserted from either the side or the end, depending upon whether the flap 10 or the gummed portion 11 is temporarily left unsealed, and wherein the firstclass mail matter can be readily inserted in the pocket either oei'fore or after the merchandise has been placed in the large compartment; Also, the

sealing flap for the pocket is formedseparately from the pocket flap, thus permitting more convenient insertion of the letter mail than in those envelopes wherein such sealing flap is formed on -one edge of thepocket flap,

I claim as my invention s 1; A duplex envelope having a main body portion, a supplemental body portion cooperating with the main body portion to form a compartment, a pocket flap connected to an edge of one of inward, said flap being gummed for only a portion of sealing flap secured to the opposite edge" of tion to overlie body. portion and the inner edge of the unconnected portion of the pocket flap to form a closure for said being gummed adjacent to its line of fold for holding the supplemental body portion in 7 place and being gummed on that portion of its surface which overlies the said unconnected portionof the pocket flap.

2. A duplex envelope made sheet or blank, the latter having amain body portion and a supplemental body or back portion which compartment with'said main body portion, said blank providing along one edge of the main body portion a pocket flap. which is folded to overlie and form a compartment with said supplemental body portion, said flap be-' ing secured by a lhesive to said supplemental body portion for only a portion of itslength, thereby to provide an entrance to said second-mentioned compartment, and a seal-' mg flap extending from the opposite edge of.

the main body portion and adapted to be V folded in to overlying relation to the supple- V mental body portion and to the free or uncon- D neeted edgeportion of said pocket flap, the

said sealing flap being guinmed along its free edge foradhesion of same jointly to the unconnected edge portion of the pocket flap and the adjacent surface of the supplemental body portion, thereby to close and sealthe entrance to the second-mentioned compartment and at the same time to hold the suppleniental body portion against displacement.

- In testimony whereof, I, the said Anon- WORTH MARTIN, have hereunto set my hand; ARGHWOBTH -MAR'1 -IN.

said body portions and folded its length to form a pocket, and a pocket, the said sealing flap V I from-"a single is folded to overlie and form a 

